Screening apparatus.



G. H. FRASER. SCHEEMNG HPM/wus.

APPLICATION FILED JUNE l5, |906- RENEWEU DEC. 2F, 15H5.

Patented Oct. 24, 1916.

5 SHELTS-SHET 2A n (5/ ima;

,'INVENTOR f "ry G. H, UNSER. SCHEENNG APPARATUS. APPMCMIQN man lum I5,woe.

RENZWRD UEM. 21,1915.

WITNESSES:

G, H. FRASER.

SCHEENNG APPARATUS. APPLICATLON men :unf i5, 15406r RENEwED 0m27.191s.

PHJGIIH (ict. 24, 1915 5 saen-SHEET 5 WITNESSES:

GEORGE HOLT FRASER, 0F NEW YORK, N. Y.

SCREENING APPARATUS.

Application illediJune 15, 1906, Serial No. 321,856. Renewed December27, 1915.

l i To all whom t may concern Be it known that l, (literair: l'loL'rFunsnn, a citizen of the United States, residing in the borough ofBrooklyn, county of Kings, city and State of New York, have inventedcertain new and useful Improvements in Screening Apparatus, of which thefollowing is a specification.

This invention relates to screening appa ratus, and especially toapparatus of this character in which the material to hc screened orsized is allowed to tion4 down an inclined screen through which thesmaller particles fall to a linesl outlet, and over `vhith the largerparticles flow' to a coarse or tailing outlet. Apparatuses of this kindare used with one or more inclined screens, either stationary, vibratcd,or jai-red, inclosed in a casing, and used with a distributer forspreading the material to he screened over thel upper part of thescreen.

My invention aims to provide various improvements in apparatus of thisgeneral character, which will he hereinafter more fully set forth withreference to the accompanying drawings, in whichligure l is an cndelevation showing the preferred form of my invention: Fig. 2 is a rearelevation thereof partly in vertical longitudinal section on the lineKw2 in Fig. l, and looking in the direction of the arrow', Fig. 2% is avertical cross-section thereof cut on the line 3-3 in Fig. 2 and lookingin the direction of the arrow, and partly broken away; Fig. l is afragmentary crossscction thereof cut on the line 4 4 in Fig. l andlooking in the direction of the arrow; Fig. 5 is a cross-section thereofcut on the line 5 5 in Fig. l anu looking in the direction of the arrow.Fig. G is an enlarged fragnuntarv section ot the body eut on the 1in@(iA-J3 of Fig. 7 and looking in the direction of the arrow', Fig. 7 isan enlarged fragmentary section thereof cut on the line 7 7 in Fig. Gand looking in the direction of the arrow. Fig. 8 is a fragmentaryVertical section looking from the rear and showing the distributerreversed, and Fig. 9 is a vertical cross section showing a modification.

Referring to the drawings, A is the mam body, B are its feet, C are itslegs, D is the feeder body, E is the hopper, and F is the Specificationof Letters Patent.

Patented Oct. 24, 1916.

Serial No. 68,919.

driving shaft. Within the body A. is a' screening member G, beneathwhich is the fines outlet Il, and in front of the lower end of which isthe coarse outlet I. At the top of the screei'i is the inlet J, ahovewhich is a conveyer or other distributing feeder K. The materialentering through the hopper E is rlistrihutcd by the conveyor Kthroughout the length of the inlet vL from v. wich it flows ou to thesf'rcen (i, down which it runs, the lines fallinrr through and escapingthrough the tine outlet ll and the coarse fiowing down and passing outof the coarse outlet-l. .XS thus fait' rlrsr'rihetl the parts may be 0fany usual or suitable construction.

According lo the preferred form of my invention. I provide an improvedconstruction for the main body A, the feeder D, the

screening member. and an improved vibrat? ing mechanism L, and I providevarious de. tails of improvement 1n construction, ar-` rangement andoperation, all of which Wifll he more 'fully hereinafter set forth, 4 .4

The body A consists of a tubular casing of substantially rectangularcross-sectio n, closed at front` by a front door a, which slides or isadjustable-vertically in grooves formed in the body, and at rear by ,ahinged rear. door which body has an open top beneath the feeder, and anopen bottom at its front end for the outlets, and is pivotallyf mountedon its feet B at front by pins c or otherwise, and ad]ustably connectedto the legs C by pins d or otherwise, so that the angle of the body canbe set at the degreev of inclination desired. The body A ispreferablycomposed of two identical ends e of cust or other metal, united at theirlower front part by a cross-piece or angle` bar f, at the lower part oftheir rear ends by a bar g, at top by a cross-piece or angle `bar It atrear and z' at front, and at their lower fronti end by a cross-piece orangle bar j, which connections preserve the two sides in' suitabberelation. The top and bottom sides of the main easing are preferablyboth closed by removable walls or covers, thel top by sheet metal coversZ which have edges renforced by angle irons m at bottom, and by Z-hars nat top, which are fitted together at their edges to hold the coversnplace `cloiiing thi rimimembers? Him 'tuti liv :ing

vers, and above tho cincrs i1 correspondg angl(- biir u iii oiirrioil bythe casing, to

i lich bars the adjacent ifilgifs' of the Lovers E i littod, By thiscoiintriiution iiny cover may be easily riinoveil to grt :'ioooss to thescreen member from in l'i-oiit. At Cach ond @zich covffr i5 :ih-o ci;nipwl by' ii, swinging clamp y) pivote-il to tho viiil iriill e.

Tho bottom ol' tho main body is ii inor :iblo or renioriiblo iloor M:iccoiiling to my iniontion= :inil preferably uoiisaistfi of, ii metalhi; fisnni.` N roinkposicil of upwardly exA tending iingh biirf 'qi'niiiiiciictl zit top by zi T-biir r :ind :it bottoni h v un :inglebair s, and isiirryng; :i iihiixi: inruil' iroicriiig ii :and w orbottoni wiill of the lioily. Tho door Nl priefilriil-lilits 'within tho@nil walls iiiiil in' iliiotifil tliiirito neiir its hiv-'er ond by thispin f .Lio i nit ith' iippifr cnil min he rswung iloii nir-.willy to neacross to the intrrior from th rear. lt maken suitably tight coiinvutionwith thi?A vnd Walls by' contact of its frnnii- A ith ih@ shoiihler utheroin and withthe bing by ifontiict 0f the. bin1 1" therewith ziriolit is hihl in thu. olor-iwi position iii iinvil wiiitiibli inniiiiiir,:iii by the gir-ir iti' :flaimph /f with whirl; thu vtop :iiiil bottoniligen of (hij: rnil:`r w im'` pro iilil` ll hie miler 'i'.iiai; ofrinzii enii i. in int-ei with ii thing@ if fitting iiggiiinfit thi#inner l'iicu of the` lQi-t ll :it the lower rndr` nini the inner fiiceol' the leg L at. thv upper enfl, :nid with lugs y for (ounce-ting theYfeeder to these ends, anil with oars a for carrying the clumps.

The borran lriii'nhiii G is prefrriibly inniiii'icil on thv inoiiiblrliiwl M o hui i( iiiiii i ioiiifii'rl irr lfl rrd n itl thi; hiicii for,Qiriiig iirofn tif im jcrwn. ,lli ifniii br iiioiiiii-uil ilrzfitlr 0ntht-lirlme N ii iipri-V wr io Support it. movlvlj or yikiliifiitiythorn-:iti by yielcling Gir eledimlly oi ro f-il-rni.; imOLntcl frame i@Lliifirifl 'troni thi` linini,` N by ulmfic or iiiwi'iiint 'springs nir#i pcetr in proviilw .i plurality n Nomi 'ou thzizii unil on ihrwmliinglos n hinil tho frame I cnnsiti': of ii number of iiifii'ieiiClmiinel bin-.Q L eiailufiriiiig thi: upper oriilif of tiir qpringf :inlhiirrigi eli-i" mils conliiyzfi oiol'irrifnig; pig-fit c" :it

. the top and bottom of thehiirri a' forsldinglv supporting tho screenfriimiA Tho lamps R botwoen the screen members (l nro shown :is i-iiohionsisting ol' :i Straight bi1 i' e of siriip iron izonnictoil to thel'riiino l" by 1i bolt f', :intl over oiiih bur thi ifhinip pons-ists ofiin inroitoil :nigh: iron (1. The` bolts f may go through thc huil'lwiring,l (Q, to rotiiin thifso in pl:ii'(. Thil, iippi-,i' i-nil ofmich :siii-vien inrmbor (l hais :i iloirniriii-lly projri'ting por tion/t which hangs on thv siti-wn Vl'riiino l. The rSiroiln nniy besiilliifivntlr rrniliint to bi: iiio\iiil,ji ilti1il or ribriitiil in:in v iisiizil or .Qiiitiibhy wur, but l pioi'ir to imL the \ilirntoiiili irhiifli ironsiit of :i ,iliiriilitlir of (hnrniiiirdl'i' actingiinpiiift iiioinbrrs iii' ranged in triiniors'ii rows both-non sindiipnoifil iipiirt froin th(- siilon of thi` riisiiig tiiiil disponi-,iliibow` tho longitiiilinil cflgles of the fici-oriisiiiiil oppohito or inihn plinioy ot' tho Springs :if: tho lnioi'lirs i loosely oroliisiiixilly ionnmftvfl by spring :irins j :intl holili-rs In'. iiiih.Lshiifts Z' whii-h oxtrnd throngh briiiingrii in ihr vini mills f :indiirie osrilhitoil by :irni m. irliirh ari? ronnffct-iiil ngijulhir by:in :iiljilitiibh liiili n :mil :1ro i-oi'inrrtul bi' :i liiili: o' tothe Strap y' of :in ori-nutrir H flriwn from the Shaft l". Thini-iri'iriiiirii' ln si :i throir` snlliiiont to mulino thv linoifli'ersto more slightly farther than iiiriziSiiry for thriii to 'hit thoclinnps ll over ,nini opposite thvy li'ingitndinnl edges ol' thescreens, so that the linockers hitthose @linups n Siiitiiblu pirciissiicor impnctivo blow, :mil thv @liiStic heirs j' iiuhl snlliciontily tomake np for :in r :iililitioniil oscillation olf ihr hnorlrir Shafts.The rosiliontly minimized or priiii inoin'ilcil Siriiin from@ iniivv)'iehl f-fiLhily iinilrr thn: bloii', so thiit tho Screen Nothingthiirron will be jiirreil bythe blow ii iiill :lightly inorcd thm-oliv,This;l jin'- 'i @j will iii ,tiiiliizii-:ii to presint ilolggingol"ilniwii-"iii liiiil to liifililiitr ilowniriii'il (lov il niiilrriulihirvorni ii-wilnitgi l'il'wiin thi' viiil wzilll i iiiiil thi- ;ndcbars' k 0lt thi si; riijn lriiini` mir br prixxi-nto! ii: ini nwml irsiiltnblo iiiiiniiir.y biit ,l pri her ti. iwt thiinnnr faire of thiA@mi u'. iiiiil to inoiint on 'tliig Jln4 `inil in il' pofniiit ii,iiihlinfr ilii= t bnr or pinto 'l'` ii: i-h nini' lio r-hnnp liiiliiinist ihr iinil iinll with iin iniirioning parking whip. or inii'rii. Spi-sing' or pieswi! oiitfv imiiillil 'rnin ihiA will in olii-hnizinnii :in` to You: ipi'int lhi- :iih nt' tho Sewon l'i'wnio :iiiilpri-int h-iilnig zit thiS point, biitwhich is iii'ili\i':illlr iihprinif pressed bar sliiliiigly inonnicfl in tho pochi-t :is shown.

f'l l ii inhit. ,l is directly above the :ici-cons, iinil pivtrrablyconsists of two removiibh: ilofh-riori thv ono ll being inclineddowiiwiirdlv un: lin imiilly nfl rifting on :inil hippinig tiliitop o'l'tir' screen for :i sii'itiiblr` ili\i.ni';iie, :init 'fi nthii l" boinginclined donnii .willy in iciivii-wiiilly ind terminating :i :miiiibhi il he trough Y distance above the deflector U to give the necessarvclearance for the inlet J, these delict-tors being so disposed that feedfrom either the rear or the front side of the feeder will he directedllownwardly and forwardly on to the top ot the screen. The deleetors areremovable through the feeder easing, and are carried by a t t ironcarrier lV bolted to the inner tace ot each end wall e. This carrier hasflanges r projecting inwardly from the end walls to prevent leakage pastthe ends of the doth-eters. which flanges are notelu=l 1uar the bottomto permit the dei 1 to pass downwardly, and are profiector l, vided witha curved wall s for directing material on to the del/lectin- U. The hackoit each carrier iV is recessed to clear the dust` plate T. and thelower corner overlaps, and prevents leakage at. the side edge of thescreen. and is recessed or notched to clear the screen.

As shown the feeder or distributer is bodily ieviirsihlc to bring itshopper at either end. Vlts casing comprises two cast metal end walls Xeonnerted by angle irons closed at the top bj' :i sheet iron top wall ufrom one extremity to the hopper E, which latter closes the remainder ofthe top1 closed at front and rear by doors e', and removably bolted tothc top of the body A. The distributing conveyer K is reversible both inposition and drive and extends from end to end oi' the feeder casing`and beneath the conveyor the feeder has a trou'gh Y flanked on each sideol the conveyer by an adjustihle .feed plate Z. which mounted to betilted to the neoessarjY angle to anse the material distributed hy thecon veyeixto low out ot' the trough in substantially uniform quantitythrcaighout its length.

Nv invention provides a feed edge. pret"- erahly au adjustable plate ateach side if the eonveyer, and a ciearanee or discharge outlet at eachside, so that the conveyer may discharge to the front or to the reardesired. according to the direction that it is driven, thus avoiding thenecessity for reversing the feed hopper or for using a left handconveyer. is a plete having uj'iwfirdljY lient edges, and is supportedfrom lugs within the casing l) by two transverse angle hars, or isotherwise suitably.constructed, and has inclined sides to `which thefeed plates are applied. The end plates X are termed withcorrespomlingly inclined internal flanges w' for supporting the trough,and 't'eed plates en the lower ends of which flanges are lugs for theangle` bars support ing the trough.

The eccentric S luis .-1 shoulder against which the eccentric strap pbears, and on its outer end the eccentric is covered with a dust plateal' which protects it from dirt. The strap is provided with an. oilwell, and each of the bearings are likewise provided for lubrication.The bearings y for the driving shaft F are spaced apart at 2' from thewall to permit any dust which may escape from the feed casing along theshaft to fall do'vvnwardly instead of entering thebearings.

rl'he feed hopper Vli) is formed with a depending lange u at each sideto prevent material from jumping across from the hopper directly overthe feed board, and with a vertical neck b2 to direct the feeddownwardly on to the con veyer. The legs C are formed with a pluralityof holes c2 through any of which the bolts d may he passed lto supportthe body from the legs at the desired angle. lCaeh end. piece c isformed with a projectii'igr ear d2 which laps the side wall i.' ot thebottom door M, and has a curved edge struck from the center ot thepivotal pin t. and the louer edge of the side wall n extends ont underthe projection d2 to prevent leaiige beneath the latte1 at the sides.

The angularit. -f the screen G is fixed relatively1 to the cody. and itssteepness is adjusted by adjusting the entire body until the desiredangle for the screen is obtained, but I prefer to construct the bottom Mot' a greater steepness than that of the screen in order to insure freeflow of the screened Ina Serial, which owing to its fineness is notlikely to liow as freely as the coarser material.

The posts c will project in the direction in which it is desired thatthe yielding frame P shall reciprocate, and are formed withv slots g2through which are passed bolts k2 in the ends ot' the frame P.y whichbolts act as stops to arrest the upward movement of this frame, whilepermitting it to freely descend when the springs are compressed. Thusthe frame P slides up and down on the posts in its movement under theaction of the mechanism L, and is abruptly stopped at a predeterminedpoint in its upward movement. The etfect of this is to permit thematerial on it to rise and to jar out of the meshes ot the screen anypieces that may have wedged therein.

Then an end motion or ltnocit tor the screen is desired, this may heattained in any suitable manner, but I prefer to put a cam i2 on thelower side of the oscillating arms, and have it run against a rollerfastened to the adjacent end dust bar T, and passing through slots inthe ends c, and to provide springs ft2 for pressing the screen towardthis roller. The rollerrides up the bevel of the cam and compresses thespring. and when the roller passes to the opposite side of the Cam, thespring presses the screen back until its roller strikes -the cam., thusgiving it the desired moven'ient and jar transversely of the Rowingmaterial. To provide for this end motion, the internal any of the parts,and one in which the mere Shifting f the feed hopper from one end to theother suffices to adapt the machine for receiving feed at eitherextremity.

It will be understood that my invention is not limited to the particulardetails of construction, combination or" parts, or imethod of operationherein set forth and shown as constituting its preferred form oradaptation, since my improvements can be availed of in whole or in partaccording te such modifications as circumstances or the judgment ofthose skilled in the art may dictate, Without departing from the spirit1,5 of my invention.

'When it is desired to jig thescreen frame instead of knocking it, Iconnect the frame by a yielding connection to the oscillating shafts,and provide stops against which it Aim strikes on its upward movement,and I make this movement such that the screen moves both upwardly andforwardly in approaching the stops. In such case I may use spiralsprings instead of leaf springs, and extend a bolt through thesesprings, using the head of the bolt for the stop and connecting therocker arms to the screen by a link and spring connection, which willyield to supply the desirable lost motion. l. may' alsoV in Such aconstruction usel the knockers, disposing the parts so that as thelifting arm raises the screen the descending arm will strike it, thuscombining both a jig and a knocking eil'ect. One such modification isillustrated in Fig. 9, in which the screen frame P is supported byspiral springs Q, from the door M at the top and the angle f extendingbetween the sides c at the bottom. Bolts p3 extending through thesesprings position the parts, permitting necessary movement of the screenframe P. A link Q3 hinged to the screen frame and to the bar f causesthe frame to more rearwardly slightly when it is depressed and stop orshoulder c limits its upward movement.

The oscillating holders mounted on the Shafts l' are loosely connected`to the screen frameI by links m3 which are hinged yto the :frame andmovably connected to the 50 holders so that when the holders oscillate 1they will act through the links alternately to depress the frame. Theswinging Strikers i3 are here shown as lniving their arms j hinged tothe holders ,t3 and yieldingly pressed thereagainst by springs `n3 onthe links m, which springs provide a yielding connection between thescreen frnmeand the oscillating shafts as well as servinglto impel thestrikers to swing with the holders 607s While permitting them to yieldif necessary on striking.

, While I have herein shown and described ,the feeder und distributerset forth, the same is not claimed in this application, being thesubject metter of claims in my application Serial No. 82,750 of 1915 ledMarch i', 1916 Serial No. 33,464 of 1915 filed June 1l, 1915 which is ndivision of the present application, and. Serial No. 33,1135 of 1915iiled June. 11, 1915, which is a division of a companion application.

1. In a screening apparatus, a vibrating inclined screen, inconihinntion with an adjustable casing for it having a removableinclined bottom supporting said screen and detachably connected to thecasing at its upper end.

A vibrating inclined screen, in combination with an adjustable casingfor it having a bottom wall of greater inclination than the screen andmovable downwardly to give access to the screen.

A vibrating inclined screen, in combination with a movable easing for ithaving a pivotcd bottom of greater inclination than and supporting saidscreen and hinged near its lower part.

l. A movable inclined screen, in combination with a casing for itpermitting its downward movement, and oscillating striking meanscomprising impact strikers above, actA ing toward, and independent ofsaid screen and within said casing and between its top wall and saidscreen for vibrating the lutter.

5. A vibrating inclined screen and means positioning it, in combinationwith striking means comprising spring impelled swinging hammers above,acting on. and independent of said screen for vibrating it, a revolvingshaft for driving said .striking means, and a driving connection betweensaid `haft and said means operating the latter from the fornier.

(i. A movable inclined screen, in combination with a f, sing in which itis downwardly movable. springs within said casing supporting said screentherein, and an oscillating shaft within said casing above said scri-cn.means operati-d bj.' said shaft and comprising swinging impart hammersacting on the upper sidi of said screen for vibrating said srrocnJand arover for said rneing above and inrlosiny' said shaft and `said means.

7. The combination with an inclined vibrating screen and n stationarycasing inrlosing it, of means closing the spare between the edge of thescreen and the side nails o'll the casing.` consisting of a vieblingplate carried by said Walls and pressing against the rdge oi" thescreen.

S. A movable inclined screen. in combination with n casing for it havinga movably mounted yielding screen frame having a phirality of parallelscreen tracks disposed in a common plane, removable screen membersshdmgly fitting said tracks and clamped said frame. said frame.

thereto and carried by and means for vibrating 'is arranged and jarringinechan isir.

9. The combination with an inclined renun'able screen. ol springiinpelled impart strikers or hammers above and acting,r on said screentor imparting permissive morcnients thereto.

lt). 'In a screening apparatus. tlicgcasing. an inclined springsupported screen therein. oscillating' shafts within said casing. adistrihuter above said casing. a dririnpr shaft therefor. a connectionbetween said oscillating shal'ts and said driving shaft foroscillatini;r the former. and yieldingly impelled swinging;r knocliersabove said siireen operated by said oscillating shat't.

1l. In a separator. the combination with a casing and with one or moreinclined screens removably mounted thereon. of a jarring mechanism foriibratingdhe screen clothing.y an inclined removable floor or hottonibeneath the said screen er screens which latter may be inserted in placeor removed when said removable floor or bottom is od 12. In a separator.the combination with one cr more inclined removable` screens. o1' acasing inclosing said screen or screens. said casing comprising aninclined floor or bottoni beneath said screen or screens and which at aSteeper angle than. the said screen or screens, said bottom haring adoor or removable part which. when rij-:ucd or removed, allords accessto said screen or screens and permits of their convenient removal. i

13. In a Separati'ir. the combination with a frame or casing and one ormore incline( screens remoiahlwv mounted thereon each comprising arectangula r trame and screen clothing stretched on said traine. otmeans beneath the inclined sides ot said frame or trames resilientlysupporting the. latter atv the 'downwardly extending' edges thereof,above said meansl acting pei-russiveliY downwardly toward Said screen inthe vertical plane ot said resilient supporting means. j

14. 1n a separator, the. combinatifa with a frame or casing. of aplurality of removable inclined screens therein each comprising;r arectangular frame and screen clothing stretched thereon. resilientsupports for thc adjacent edges ot two ot Said screens.Y an means forpercnssirely jarring said screens.

15. In a separator. the combination with a frame or easing, and a`plurality of removable inclined screens therein each comprising arectangular frame and screen clothing stretched thereon. resilient meanssnppcrting adjacent Aedges ot two ol .said screens, and means oppositeadjacent edges of two of said screens for 'jarring them.'

16. ln a separator. the combination with a frameor casing. of two ormore removable inclined screens dlspoa-.ed in parallelism and eachcomprising a rectangular screen frame and screen clothing stretchedthereon, of

vcussively jarring means opposite adjacent edges ol" two of sai lscreens for jarring them.

1l. ln a separator. the combination with a traine or casing and aremovable, inclined screen thereon conilnising ,a rectangular screentraine and wire mesh clothing stretched thereon. of jarring mechanismbetweenremote from. and spaced apart from` the sides of said casing andopposite in acting' on the edge of said frame. for persaid screen at apoint or points intermediate ot' the sides ot said casing.

1S. ln a swparator, the combination with a frame or casing. and apluralityY of removable inclined screens therein each comprising arectangular .sfreen frame and screen clothing: stretched posed inparallelism in said easing with adjacent one to the next.. oi' meansopj'losite the adjacent edges of two of said .screens for preventingleakage between thein. means resiliently supporting said. screens. andmeans for percussiveljv jarring.Y said screens.

19. ln a separator. the combination with a frame or casing'. and aremovable inclined screen therein. ot' a plurality of springs between.reinotc from` and spaced apart from, the sides ot' said l'aine orcasing, and diS- posed in a row transversely of said casing, beneathsaid screen and resiliently supporting the latter, and a plurality ot'jarring devices between. remote from, and spaced apart from. the lsidesof said frame or casing ior percussivelv jarring said screen disposed ina row transversely of said casing opposite said row of springs andcussirelj' tow-.1rd said screen in to the stress of said springs.

Q0, ln ascparator. the combination with a traine or casing. and aplurality of remorahhl inclined screens therein cach comprisingr arectangular frame and screen clothing! stretched thereon. and disposedin parallelism in said casing. of a plurality of parallel hars orsupporti.` mounted in said casing opposite the adjacent edges of saidscreens. springs mounted on said supports unl resilientlj' sustaining'the edges of said screens and eaertin;4 an upward and forward stress forresilientlv supportingr the edges of said screens` and jarringrmechanism actingr toward the edges ot said screens percussirelyreverselj' ot' the stress of said springs for jarringr said screenclothing.

2l. ln a separator. the combination l,with a traine or easing. ol aremovable inclined thereon, and disopposition screen therein comprisinga resilientlj,T mounted reuiorahlc rectangular oblong! acting` perlos ltoward the upper side of, the longitudinal edge of said frame at sparedpoints intermediate of its extremities.

1n a separator, the combination with a resiliently mounted removableinclined screen comprisingl a resilient trame or support and screenclothing mounted on the top thereof, and means for pereussivelv jarring'said sereen, of a easing within which said screen is resilientlv mountedhaving an inclined bottom wall` of steeper inclination than said screen.

2B. In screening apparatus, a resilientlv mounted removable inclinedscreen, in Combination with a easing' in which it is inelosed, anddownwardly acting jarring means above said screen for vibratingr it.said casini;` ha ving,Y a detachable bottom wall spaced below and ofgreater inclination than the screen, and means resilientlf.T sustainingsaid .sereen above said bottom wall.

El. .\n inclined resilienlly mounted removable screen` in eombiL ionwith means tor jarring said screen, anda easingV inelosingn it havilm4 ahinged bottom wall hinged to its lower part, and means resilientlyvsustainingT said .screen above said wall.

A resilientl)v mounted removable inrliued screen, in combination with anadjustable casingr inelesing it, means for adjusting the annularitv ot'said easing, resilient means supportingA the screen in :aid easing,stops or abutments l'or arresting' o p- 'ard movement ol' said `screenin said easing. and In ans for 1loivrwardlv jai ring said screen.

2li. ln a separano; the combination with a resiliently mountedrenu'ivable inclined screen, and means tor percussivel)r jarring` it, oia casina inclosing .said screen and haring an inclined wall or bottombeneath the latter, and means for supporting said screen within saidcasina' below aud opposite the edges ot said screen and above and spacedapart from said wall or bottom to atlord a passage or space above thelatter and below said means.

2T. In a separator, the combination with a resilientlv` mounted inclinedremovable screen. and means for percilssively jarring it.,` oi' aeasing' for said .screen harina' side walls and a bottom wall inelosingSaid sereen. and supp-.atinemeans intermediate of, remote from, andspaced apartfrom, said side walls, and below said screen forresilientl)Y supporting it intermediate oi' said side walls.

2H. ln a separator, the combination with a resilientlv mounted removableinclined screen. and means for jarring1r it, of a easing for said screenhaving a bottom and side walls, a bar 'or member spaced above saidbottom and extending transversely of said casing between said side wallsbelow and sustaining said screen intermediate of said side walls and onwhielrsaid screen is resilientlv mounted.

Eil. .ln a seliarator, the combination wiin a removable resilientlvmounted inclined screen, and m `ans for jarring!l it, of a main frame orcasing on which said screen mounted, sustaining;` means within and diS-posed transverselyY of said frame or easing and below and salstainingilsaid screen intei-mediate ot its side edges, and means above said screentor preventing leakage of material o\e1' the top edge thereof spacedapart from said sustaining' means and affording a space or chamber abovethe latter for reeeivinsT the upper edge of said screen.

'll. In a separator, the eombination with a removable inclined sei-eenhaving a. downwardl)V and rearwardlyY extending part or member at theunder side of its upper edge, of a frame or easing;r on which saidscreen is removably mounted having;v side walls at the side, edges ofthe latter. and means mounted on said frame or easing' intermediate ofsaid side walls having an upwardly and for-- wardl)Y extending' part ormember beneath and engagingT said downwardlyY extending part or memberfor sustaining said screen.

231. In a separator, a removable inclined screen, in combination with aeasing therefor haringY walls inclosing said screen, means beneath theedge oi' said screen, and between, remote ltroni, and spared apart from,the side walls of said easing, resilientl),v pporting said screen at apoint or points :ntermediate ot' said ,side walls` and means affording astop or abutment for limitiingr upward movement of said. screen.

3Q. ln a separator. the combination with a removable inclined screen,and means for jarring it, ot' a 'traine or casinar on which said sereenis resilientlv mounted. a transverse bar or member mounted on said frameor tasiiucT beneath and siistaininnr the edge, of said sereen. andsprings resilientl)Y snpporting' said screen. 4

33. ln a separator, the combination with a resilientlv mounted removableinelined screen, and a tranrl or easing on which it mounted. ot meansextending traosverselv of said trame or casing,y at the upper edge ot'Vsaid screen for preventing leakage of materlal over said edee. andresilient means brlow the upper edge, of said screen ,for sustaining.rsaid screen, aid upper means and said resilient mean:` spaced apart toaltord between them a recess or chamber for receiving the upper edge ofsaid screen.

3l. In a separator, the combination with a removable inclined screen,and a frame or casing on whiclr'it is mounted, a bar or member extendingtransverselyA of said frame or casingr beneath and ristainin;r saidscreen, and a spring or springs resilientlv supporting said screen.

35` In a separator, the combination with the vertical plane ot said rowof a removable inclined screen, and a casing hin inf; elite and bottoniallev inclosing said animan. ol' ine-ans talow tinJ lower part ot will'reeu anll Anietaining; lla latter1 .spaced alan e; the liottoin wall ot-Qaiil canina and at. fouling a space or lni..-a; fo latin-ath niflnnaina. :ual a spring' or springe rrailicntl-v unimi-line said herren. 1

lll'. ln a separator, a removable inclined nerven. aint a easing'therefor comprising fr liottoin wall` in combination nith a har ornninliii niounleil on yaiil owing hclovv and ,einmal apart troni :will.e1-reen :intl aliove :ont spaced ai rt troni Saiil n'alh .ioil i springor wrinefa lictn'een eaiil .screen and laid liar or nirniher renilientlySupporting; the former lioln the latter.

3i'. ln a separator, a i'enioiahlc inclined screen minimising' arectangular screen lianir and a screen clothing stretched on the nouereide thereof, and a trame or casing! on which it ia reailiinllivmounted. in ronihinatii n with a liar or inenibei inoiinteil on theelige ot tho top Vl'aize ot' saliti screen clothing` an impact memberabove ain'l on positif the edge of said screen and acting iniiuoftivi-lyon Sai-.l bar or lneinber for jar lingor Said `ri-een, and meanssustaining sail wen in Said easing'. i i

lle ln a separator. the combination with a rena i viali inclinedVQereel'i, and a inning on whirh il` in reinoiabl;Y mounted, olf meanslextending transversely ot' said casing; above the upper edge ot' 4eaiilScreen for nrivventing' -leakage over such elige` and nA ansi at: theysiile edges of Sani screen affordingy a reeeas above and Vlor reecivinL'such edgest'or pro renting leakage past the latter.

lili in a eeparator, the coniliination with a rcsiliently mountedremovable inclined screen. of a traine or casing; on which Said.;,screen is: inounterh and jarring mechanism acting on the Side edgesoit' Sait] screen, co1npria-ing impact strikers pcrcusisively jarring,rsaid screen.

40. ln a separator, thc combination with a removable reeiliently mountedinclined screen cornprissingr a rectangular frame and a screen ,clothingmounted thereon, of a plurality of springs disposed in a downwardlyextending row opposite and acting resilientl)v to Tard Said screenclothing, and a plurality of imnactive Yjarringr device',I dienosed ina' downwardly extending row in springsanil onlioaite Said screenclothingf :intl a Iting; pen eussively toward Said screen elution," inthi` vertical plano ot' the Stresa of Saii'l springs.

Lll. ln a separator`r the combination with a rcsiliently mountedremovable inclined Screen, of a casing having an inclined hottom walland in which said screen is rev movablv mounted` a bar or member beneathSairl screen and extending transversely of said casing, spaced apartfrom said bottomy wall to all'ord an outlet for tine material he neathit. and spaced apart .troni they trout of aid casing to all'ord anoath-t l'or coax-Se material in front fil5 it, :unl Fnslainine saitsvi-een to ifierinit ria-iliont vilnation ol' the latter` and niezinaabove eaiil Hrricn lor iin- ]nli'iil'ily jal'l'ing it.

l2. ln a separator, the combination ivith :i resilient removableinclined Screen. ot' a easing' in which saiil screen is mounted having'an inclined bottom wall and side nails, means within said tainingintermediate ot' saiil side walls and spaced apart from Said lioltoniwall beneath andV sustaining thc npner edge of said screen, unda'll'ording a passage beneath said means, and above said bottoni 1wallpast the upper edge Ot' Said Screen tor connnnnicating with the 11e-aththe latter.

43. 1n a separator, a removable inclined eci-een, in combination with acaeing therefor having eide and bottoni walls and means disposedtrai'ievere ly ol' :laid casing helon aint spaced apart Arom the upperedge of l1aid Screen and ail'oiding a epilee beneath the latten andsprings sustaining said ai-reen from said means.

44. In a `ecparator, a plurality ot removuable inclined screens, and atraine or casini on which said screens are inhnnted. in coinl'iinationwith bars or nieinbers extendinj; transverselj` of `aaiil casing andepaced apart from the bottoni wall thereof, and sustaining said screens.

4.5i. ln a vepaiatoriythe combination with a plurality of removableinclined screens,

anil a casing on which Saul screens are inonnteil having side andhottorn walls, of a liar or nii-nilier beneath the adjacent edgeei oltwo ot said screcn` and sustaining them, anacei'l alloro Said bottom.wall. to atord a passage above the latter.

Jttl. In a Separator, the combination with a plurality of removableinclined screens, and a casing on which Said screens are mounted haringiside walls and an inclined hotloin will, o't' transverse bare ormembers mounted in said casing beneath and spaced apart from saidscreens for sustaining the latter, and springs resiliently sustainingSaid screens from said bars.

47. In a Separator, the combination with a renioi'ahle inclined screen.of a casing in which eaiil Screen is resiliently mounted having aillewalls inclosing Said screein bars or angina4 mounted against the inneryidc walls of saiil casini! and havings inwardlyY extend'- ing llangcsbeneath anil Sustaining :iaiil nerven at the sides ol' said nailing, andmeans rcsilientljvr susaininff said Screen interim-diate of the Fides otsaid casino'.

4%. ln a eeparator, the coinl'iinationwith a resiliently mountedremovable inclined screen, and 'ai caain'g on which said screen ismounted, of bars or angles mounted within space beloll lllli

